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UNSIGNED. 18TH CENTURY
Details
A brass Holland Circle
Unsigned. 18th Century
The central glazed compass with an eight point wind rose engraved on the silvered base, North shown as a fleur-de-lys, with blued-steel needle and degrees in four quadrants, the alidade arm with twin sights and pointers to read off the circumference scales of amplitude and azimuth 0-180° (x2 each), with a further scale for Ombra recta and Ombra Versa Poligon, with four fixed sights, a suspension loop and a separate mounting arm for use with a staff, in a fitted mahogany carrying case
26cm. wide
Unsigned. 18th Century
The central glazed compass with an eight point wind rose engraved on the silvered base, North shown as a fleur-de-lys, with blued-steel needle and degrees in four quadrants, the alidade arm with twin sights and pointers to read off the circumference scales of amplitude and azimuth 0-180° (x2 each), with a further scale for Ombra recta and Ombra Versa Poligon, with four fixed sights, a suspension loop and a separate mounting arm for use with a staff, in a fitted mahogany carrying case
26cm. wide
Special notice
Christie's charges a Buyer's premium calculated at 23.205% of the hammer price for each lot with a value up to €110,000. If the hammer price of a lot exceeds €110,000 then the premium for the lot is calculated at 23.205% of the first €110,000 plus 11.9% of any amount in excess of €110,000. Buyer's Premium is calculated on this basis for each lot individually.